Features and Functionality:

Floating Panel
- Resizable
- Moveable
- Can be minimized by clicking the clock icon (Click it again to unminimize)
- Time Left Until Break is Automatically shown when Firefox or current page is limited
Break Panel
- Does not replace current website
- Allows to end the break early
Settings
- Dark Mode
- Fix Transparency (Make floating panel transparent if it isn't already)
- Firefox
  - Set Time Limit
  - Set Break Length
- Page Rules
  - Click R Button to enable page URL matching using regex
  - Set Time Limit (In Minutes, set to negative or 0 to disable)
  - Set Break Length (In Minutes, set to negative or 0 to disable)
- Set Floating Panel Opacity
- Set Floating Panel Background Opacity
Advanced Settings
- Show/Hide Firefox Usage Time
- Show/Hide Current Website Usage Time
- Count time while Firefox is unfocused
- Enable/Disable Animations
- Show/Hide Early Break End Button
- Set Early Break End Delay
- Reset Time Count after selected amount of time while Firefox is inactive/unfocused
- Reset Current Page Time Count Button
- Reset Firefox Time Count Button
- Change Time Update Interval

Source Code Please Submit Feature Requests and Issues at our Github

LimitLost

Published Firefox add-on: